Senior Fullstack Engineer - Web3 User Acquisition Platform

Location: Remote - US (EST Preferred)

Compensation: $150K - $200K

We are a leading web3 user acquisition platform that has powered user onboarding for over 500 protocols since 2021, facilitating over 500 million transactions and serving over 3 million users across 40+ chains. Our platform, which includes gamified activations and unique on-chain credentials, is infrastructure for major players across DeFi, gaming, AI, and NFT ecosystems. Backed by $21M in total funding, we are seeking a highly experienced Senior Fullstack Engineer to own end-to-end feature delivery across our core platform and new initiatives.

In this high-impact role, you will take full ownership of major product features from conception through deployment. You will be instrumental in driving architectural decisions for both frontend and backend systems, ensuring performance and scalability across our complex, multi-chain platform. You will collaborate directly with the Head of Product and Founders to shape product strategy, establish best practices, and mentor other engineers.

Key Responsibilities:

Staff React Native Engineer

Location: New York (Office)

On-site | Full-time

Compensation: Competitive

Our client is the development firm responsible for building and operating the full technology stack behind the world’s leading memecoin launchpad. These systems are engineered for low latency and high throughput, operating under constant load where precision is critical. As a React Native Engineer on the mobile team, the successful candidate will play a pivotal role in scaling a high-performance application that brings crypto and SocialFi to a global user base. This role requires working across the stack to craft seamless mobile experiences, shipping code rapidly, and iterating within a high-growth environment.

Key Responsibilities

Quantitative Software Engineer - DeFi Economic Optimization

Location: Remote - US, Canada and would consider candidates based in Puerto Rico

Compensation: $150K - $200K

We are a Series B quantitative research and optimization company that leads the field in DeFi economics. We manage market risk, optimize growth, and ensure economic safety for protocols facilitating most spot trading, borrowing, and lending activity across all of DeFi, securing over $42 billion in customer TVL. We are seeking highly skilled and motivated Quantitative Software Engineers to drive the safe progression of future financial systems.

You will be at the intersection of quantitative finance and software engineering, driving the design and implementation of risk management and optimization strategies for major DeFi protocols. This role involves full ownership, from building robust data pipelines and core modeling platforms to deploying logic that enhances capital efficiency and risk-adjusted yields.

Key Responsibilities:

Protocol Lead - Rule Enforcement for Regulated Blockchains

Location: remote - north and South America and the EU

Compensation: $180K - $220K

We are building a platform that sets the standard for how regulated blockchain applications enforce transaction rules directly at the smart contract layer. Our system empowers teams to create modular, programmable policies (like AML/CFT checks or off-chain collateral requirements) enforced with cryptographic guarantees before a transaction executes on-chain. We are seeking a Protocol Lead to own the entire smart contract suite, driving robust, scalable risk management for real-world use cases.

As the Protocol Lead, you will have full ownership of the architecture, development, and maintenance of our core smart contract suite. You will be the team's blockchain subject matter expert, defining security best practices, managing audits, and building tooling for seamless integration. This role requires a balance of hands-on coding, security leadership, and cross-ecosystem research (EVM and non-EVM).

Key Responsibilities:

Principal Engineer (Remote Outside US) - Real-World Asset Minter Infrastructure

Location: Remote - Europe or on the East Coast for South America/Canada (No US)

Compensation: $200K - $225K

We are building a critical piece of infrastructure that is the first live Minter on a major protocol. Our system transforms real-world collateral, such as U.S. Treasuries, into on-chain monetary building blocks ($M). This programmable, composable foundation allows builders to create their own application-specific digital dollars. We are seeking a Principal Engineer to take full-stack ownership of the systems that power this creation and distribution.

This role begins as a high-impact Senior Individual Contributor position with broad autonomy to define architecture and set engineering practices, designed to grow into a technical leadership role. You will work directly with leadership to execute a clear, productized system vision. Your focus will be on building the institutional-grade infrastructure that enables automated minting, multi-chain liquidity, and key integrations.

Key Responsibilities:

About the Role
The UX Architect defines and optimizes the structure, flow, and interaction models of complex digital products. You’ll translate advanced capabilities into intuitive, scalable experiences while balancing usability, performance, and trust.

Key Responsibilities

• Define and document information architecture, interaction flows, and navigation models.
• Develop frameworks for decision transparency, error recovery, and consistent interaction models.
• Create scalable system design frameworks that support cross-platform experiences (web, mobile, conversational).
• Produce detailed wireframes, journey maps, and prototypes to illustrate end-to-end workflows.
• Establish UX guidelines and best practices for integrating predictive insights and automation.
• Conduct architecture-level testing (navigation validation, workflow evaluations).
• Ensure designs meet accessibility and inclusivity standards.
• Maintain UX documentation, design libraries, and pattern repositories for reuse across teams.

Requirements

Mercier Consultancy Medical is seeking enthusiastic Nederlands/Vlaamse Klantenservice-vertegenwoordigers to join our team remotely from Greece! If you have a passion for customer service and enjoy helping others, this is the perfect opportunity for you. As a Customer Service Representative, you will be the first point of contact for our clients, assisting them with their inquiries and ensuring a high level of satisfaction. We are committed to providing a positive working environment that values your contributions and supports your professional growth.

Key Responsibilities

• Provide exceptional customer service to clients through various channels (phone, email, and chat).
• Identify and resolve customer issues and queries in a timely manner.
• Document all customer interactions and maintain accurate records.
• Assist in the development of customer service procedures and best practices.
• Collaborate with team members to enhance customer satisfaction and loyalty.
• Stay updated on product knowledge and services offered by the company.

Requirements

Are you ready to take your recruitment skills to the next level? Mercier Consultancy MD is on the hunt for a dynamic Dutch Speaking Freelance Recruiter to join our diverse team from anywhere in the world! This is more than just a job—it's an exciting opportunity to help shape the future of talented individuals and connect them with their dream roles.

Your Mission, Should You Choose to Accept It:

• Harness your talent-sourcing skills to locate, engage, and attract exceptional candidates across various sectors.
• Conduct insightful interviews that not only gauge skills and experience but also uncover the true personality of candidates.
• Nurture meaningful connections with candidates, guiding them through every step of the recruitment journey.
• Partner with hiring managers to truly understand the unique requirements of each role, making your recommendations count.
• Own the recruitment process, from crafting compelling job postings to negotiating offers that candidates can’t resist.
• Keep your finger on the pulse of industry trends and best practices to ensure our recruitment stays ahead of the game!
• Deliver updates and insights to the management team, showcasing the progress of our exciting talent acquisition efforts.

Requirements

Mercier Consultancy MD is seeking a proactive Dutch Speaking Freelance Recruiter to join our global team! This is a fantastic opportunity for talented individuals who are passionate about connecting people with their ideal jobs. As a Freelance Recruiter, you will work remotely from anywhere in the world, sourcing and engaging top talent for a range of roles across our organization.

Key Responsibilities

• Utilize various channels to identify, attract, and engage potential candidates for open positions.
• Conduct in-depth interviews to assess candidate skills, experience, and cultural fit.
• Develop and maintain strong relationships with candidates throughout the recruitment process.
• Collaborate with hiring managers to understand role requirements and provide strategic recruiting support.
• Manage the entire recruitment cycle, from job posting to offer negotiation.
• Stay updated on industry trends and recruitment best practices to enhance the talent acquisition process.
• Provide regular updates and reports on recruitment activities to the management team.

Requirements

Project Manager - High-Volume Crypto Trading Platform

Location: Remote - European based candidates only

Compensation: $150K - $170K

We lead the way in cryptocurrency trading, operating the largest Telegram trading bot and facilitating over $28 billion in volume for more than 50,000 daily active users. We deliver seamless on-chain trading experiences with advanced tools like DCA, limit orders, sniping, and automatic wallet copy-trading. Join our lean team to contribute to a cutting-edge and widely used product that sets the standard in speed, innovation, and reliability.

We are seeking a Project Manager to oversee task distribution, delivery timelines, and project coordination across our growing development team. This role bridges technical expertise and project leadership, ensuring smooth collaboration and efficient delivery of key initiatives for our high-volume trading platform.

Key Responsibilities: